Both modes had comparable sensitivity,and positive predictive value. Sensitivity was 80.36%versus79.63% and the positive predictive value was 90.14%, versus88.63% for ATC versus PSV respectively. The specificity was compa-rable (79.63% versus 80.36% in ATC versus PSV respectively). ATCgroup had higherve predictive value than PSV group (71.4% ver-sus 81.25% respectivel